Options for "Flushing the Coolant Passages" of an engine block?

[mx54life]

Well as I was removing the leaky freeze plugs I realized that I need to flush the coolant passages of this engine block as it is full of gunk/rust from using a poor mix. The prior owner probably was using tap water I'm guessing lol. Anyhow I am trying to seek some options if I can do this in my garage as I don't want to do a full rebuild. So far this what I have gathered.

1. Bring the block to the machine shop and have it bathed/flushed.

2. Use this? http://www.ultraoneusa.com/shopdisplayproducts.asp?id=10&cat=Safest+Rust+Remover

Any other suggestions? Thanks

BTW here is how it looks....

http://i1284.photobucket.com/albums/a578/ebaradas/IMG_1953_zpskah0rtxo.jpg (http://s1284.photobucket.com/user/ebaradas/media/IMG_1953_zpskah0rtxo.jpg.html)

http://i1284.photobucket.com/albums/a578/ebaradas/IMG_1952_zps8ft1rvav.jpg (http://s1284.photobucket.com/user/ebaradas/media/IMG_1952_zps8ft1rvav.jpg.html)

http://i1284.photobucket.com/albums/a578/ebaradas/IMG_1940_zpsysgeqkp9.jpg (http://s1284.photobucket.com/user/ebaradas/media/IMG_1940_zpsysgeqkp9.jpg.html)

[BoBo]

Take it to a shop for a hot tank cleaning. Unless you have your own "power clean2000" or some kind coolant flush machine. If you want the best go for the hot tank. I paid about $100 for mine to be cleaned and it came out nice.

[mx54life]

Take it to a shop for a hot tank cleaning. Unless you have your own "power clean2000" or some kind coolant flush machine. If you want the best go for the hot tank. I paid about $100 for mine to be cleaned and it came out nice.

It looks like you're pretty close to where I am at. Who did you go to?

[BoBo]

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